New Style option: Overlap

If this option is enable, the blenfont check for overlap characters, like
one of my previous commit but now it's optional and disable by default.
(This fix the "Fi" or other case when the characters are too close)

Enable/disable from:
Outliner -> User Preferences -> Styles -> Panel Font -> Overlap

(also for other styles, Group Label, Widget, Widget Label)

3 files changed, 23 insertions, 16 deletions

diff --git a/source/blender/blenfont/BLF_api.h b/source/blender/blenfont/BLF_api.h
index cb64615d64c..2ee31a17fa6 100644
--- a/source/blender/blenfont/BLF_api.h
+++ b/source/blender/blenfont/BLF_api.h
@@ -135,6 +135,7 @@ void BLF_dir_free(char **dirs, int count);
 #define BLF_FONT_KERNING (1<<2)
 #define BLF_USER_KERNING (1<<3)
 #define BLF_SHADOW (1<<4)
+#define BLF_OVERLAP_CHAR (1<<5)
 
 /* font->mode. */
 #define BLF_MODE_TEXTURE 0
diff --git a/source/blender/blenfont/intern/blf_font.c b/source/blender/blenfont/intern/blf_font.c
index ee4ba0ee71a..a3c5232cc76 100644
--- a/source/blender/blenfont/intern/blf_font.c
+++ b/source/blender/blenfont/intern/blf_font.c
@@ -146,20 +146,22 @@ void blf_font_draw(FontBLF *font, char *str)
 
 			if (FT_Get_Kerning(font->face, g_prev_index, glyph_index, FT_KERNING_UNFITTED, &delta) == 0) {
 				pen_x += delta.x >> 6;
-/*
-				if (pen_x < old_pen_x)
-					pen_x= old_pen_x;
-*/
+
+				if (font->flags & BLF_OVERLAP_CHAR) {
+					if (pen_x < old_pen_x)
+						pen_x= old_pen_x;
+				}
 			}
 		}
 
 		if (font->flags & BLF_USER_KERNING) {
 			old_pen_x= pen_x;
 			pen_x += font->kerning;
-/*
-			if (pen_x < old_pen_x)
-				pen_x= old_pen_x;
-*/
+
+			if (font->flags & BLF_OVERLAP_CHAR) {
+				if (pen_x < old_pen_x)
+					pen_x= old_pen_x;
+			}
 		}
 
 		/* do not return this loop if clipped, we want every character tested */
@@ -228,20 +230,22 @@ void blf_font_boundbox(FontBLF *font, char *str, rctf *box)
 
 			if (FT_Get_Kerning(font->face, g_prev_index, glyph_index, FT_KERNING_UNFITTED, &delta) == 0) {
 				pen_x += delta.x >> 6;
-/*
-				if (pen_x < old_pen_x)
-					old_pen_x= pen_x;
-*/
+
+				if (font->flags & BLF_OVERLAP_CHAR) {
+					if (pen_x < old_pen_x)
+						pen_x= old_pen_x;
+				}
 			}
 		}
 
 		if (font->flags & BLF_USER_KERNING) {
 			old_pen_x= pen_x;
 			pen_x += font->kerning;
-/*
-			if (pen_x < old_pen_x)
-				old_pen_x= pen_x;
-*/
+
+			if (font->flags & BLF_OVERLAP_CHAR) {
+				if (pen_x < old_pen_x)
+					pen_x= old_pen_x;
+			}
 		}
 
 		gbox.xmin= g->box.xmin + pen_x;
diff --git a/source/blender/blenfont/intern/blf_glyph.c b/source/blender/blenfont/intern/blf_glyph.c
index 5e0868ea680..a637774d7bf 100644
--- a/source/blender/blenfont/intern/blf_glyph.c
+++ b/source/blender/blenfont/intern/blf_glyph.c
@@ -500,6 +500,8 @@ int blf_glyph_texture_render(FontBLF *font, GlyphBLF *g, float x, float y)
 	float color[4];
 
 	gt= g->tex_data;
+	xo= 0.0f;
+	yo= 0.0f;
 
 	if (font->flags & BLF_SHADOW) {
 		xo= x;